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Photocatalytic activity of Sn-doped ZnO synthesized via peroxide route
Journal of Physics and Chemistry of Solids ( IF 4 ) Pub Date : 2021-08-18 , DOI: 10.1016/j.jpcs.2021.110340
Michaela Š. Slušná 1 , Darina Smržová 1 , Petra Ecorchard 1 , Jakub Tolasz 1 , Monika Motlochová 1 , Ivo Jakubec 1 , Monika Maříková 1 , Martin Kormunda 2 , Václav Štengl 1
Affiliation  

ZnO*ZnO2 mixture was prepared by thermal hydrolysis of a zinc peroxo-complex precursor in presence of Sn2+ and Sn4+ ions. The effect of different tin valence states on structure and photocatalytic properties of the resulting products was investigated. All samples before annealing contained ZnO2 and except one sample also SnO2. Microstructural analysis showed a difference in morphology between the two sets of samples. A difference was also observed for the specific surface area. The photocatalytic decolorization of Orange II dye was employed to determine the photocatalytic activity of the samples; Sn2+ doped samples were more active than Sn4+ doped ZnO samples. Temperature 600 °C was optimal for annealing - the sample ZnP150Sn2 annealed at 600 °C had the highest rate constant (0.0730 min−1) among the samples. Additional increase of Sn2+ amount led to further increase in rate constant (0.0937 min−1 for the sample ZnP200Sn2) up to a certain point.



中文翻译:

过氧化物途径合成Sn掺杂ZnO的光催化活性

ZnO*ZnO 2混合物是通过在 Sn 2+和 Sn 4+离子存在下热水解锌过氧复合物前体制备的。研究了不同锡价态对所得产物结构和光催化性能的影响。退火前的所有样品均含有ZnO 2并且除一个样品外还含有SnO 2。微观结构分析显示两组样品之间的形态差异。还观察到比表面积的差异。采用Orange II染料的光催化脱色测定样品的光催化活性;Sn 2+掺杂的样品比 Sn 4+更活跃掺杂的 ZnO 样品。600°C 的温度是退火的最佳温度 - 在 600°C 下退火的样品 ZnP150Sn2 在样品中具有最高的速率常数 (0.0730 min -1 )。Sn 2+量的额外增加导致速率常数进一步增加(样品ZnP200Sn2 为0.0937 min -1)直至某一点。

更新日期:2021-08-19
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